Figure 1. General diagram showing tectonic locations being discussed for IODP drill sites in support of GeoPRISMS science objectives. Site 1: sediment and basement inputs to subduction factory and seismogenic zone, important for Cascadia, Aleutians, and Hikurangi. Site 2: Shallow drilling to understand slow slip events, suggested for Hikurangi margin. Site 3: forearc drilling to reconstruct megathrust events and mountain growth, suggested for Aleutian and Cascadia margin. Site 4: Volcanic history (via tephra) and early arc basement, suggested for Aleutian arc. Site 5: Aleutian Basin formation and evolution.
{}